Hi,
I found that runing a piece of code costs 490.21 us when OpenThread is disabled.
However, after OpenThread is enabled, the time changed to 746.3 us as shown in the figure below:
Is this caused by the CPU usage of OpenThread? If so what is the OpenThread protocol stack doing(triggering an IRQ?)? Is there a way to reduce this impact?
The prj.conf is as follows:
#########
# Basic #
###################################################
CONFIG_GPIO=y
# Enable DK LED and Buttons library
CONFIG_DK_LIBRARY=y
# This example requires more workqueue stack
CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=2048
# Config logger
CONFIG_LOG=y
CONFIG_LOG_DEFAULT_LEVEL=3
CONFIG_LOG_BACKEND_UART=y
CONFIG_LOG_BACKEND_RTT=n
CONFIG_LOG_BACKEND_RTT_MODE_DROP=y
CONFIG_LOG_MODE_OVERFLOW=y
CONFIG_LOG_PRINTK=y
CONFIG_LOG_PRINTK_MAX_STRING_LENGTH=256
CONFIG_LOG_BUFFER_SIZE=4096
CONFIG_LOG_BACKEND_RTT_MESSAGE_SIZE=256
CONFIG_LOG_STRDUP_BUF_COUNT=64
CONFIG_LOG_STRDUP_MAX_STRING=64
CONFIG_LOG_BACKEND_SHOW_COLOR=n
CONFIG_LOG_BACKEND_FORMAT_TIMESTAMP=y
CONFIG_CONSOLE=y
CONFIG_USE_SEGGER_RTT=n
CONFIG_SEGGER_RTT_BUFFER_SIZE_UP=4096
CONFIG_RTT_CONSOLE=n
CONFIG_UART_CONSOLE=y
CONFIG_NRFX_SPIM3=y
CONFIG_NEWLIB_LIBC=y
CONFIG_EVENTS=y
###################################################
###############
# Open Thread #
###################################################
# Enable OpenThread features set
CONFIG_OPENTHREAD_NORDIC_LIBRARY_MASTER=y
CONFIG_NET_L2_OPENTHREAD=y
# Generic networking options
CONFIG_NETWORKING=y
CONFIG_ASSERT=y
CONFIG_ASSERT_NO_COND_INFO=y
CONFIG_MBEDTLS_SHA1_C=n
CONFIG_FPU=y
###################################################
Platform: Windows 10
NCS version: 1.9.1
Boards: nrf52840dk_nrf52840
IDE: SEGGER Embedded Studio（SES）
Looking forward to your reply.
Best wishes,
Joyop
